**20. Assignment or Sublease.** Lessee shall not attempt to sell, lease, charter, rent, assign or dispose of the Aircraft, or
any interest herein or therein, or any part thereof, without Lessor’s prior written consent and, in accordance with the Cape Town Convention, without making all filings and registrations with the International Registry deemed necessary or
advisable by Lessor to protect its interest herein and in the Aircraft. The Aircraft shall at all times be in the sole possession and control of Lessee and Lessee will not, without the prior written consent of Lessor, assign this Lease or any
interest herein or sublease, or otherwise transfer its interest in the Aircraft, provided that Lessee shall remain liable to Lessor under this Lease during any such sublease or transfer. Any sublease shall not relieve Lessee of any of its
obligations hereunder. In the event that Lessee sublets or attempts to sublet or voluntarily or involuntarily parts with possession of the Aircraft, or attempts to move said Aircraft from the airport where it is required to be kept, except while
being in the ordinary permitted use hereunder, or in any manner violates any of the terms hereof, then in either or any of these events this Lease shall at the option of the Lessor immediately terminate and Lessor shall be entitled to immediate
possession of the Aircraft. 

  


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